Brake shoe



Feb. 7, 1928.

A. Y. DODGE BRAKE SHOE Filed Feb, 15. 1926 INVENTOR ADlEL Y. DODGE ATTORN EY Patented Feb. 7, 1928.

* UNITED STATES 553 753 PATENT oi-"rice.

ADIEL Y. DODGE, OF SOUTH BEND, INDIANA, ASSIGNOR TO BENIJIX BRAKE COMPANY,

' OI'CHICAGC), ILLINOIS, A CORPORATION OF ILLINOIS.

BRAKE SHOE.

Application filed February, 1926. Serial No. 88,201.

This invention relates to brakeshoes, and is illustrated asembodied in novel presseds metal shoes foraninternal expanding automobile brake. I i p '5 An important object of the invention is to lessen the costof a light but strong shoe of pressed metal, by forming it with a stiffening web including two portions integrally connected along their edges opposite the triotion face of the shoe, thus permitting at least the major portion of the shoe to be all in one piece. Preferably these portions of the web are severed and spread apart, or otherwise formed, at one end of the shoe, to project as spaced arms w-hichappear in the drawings straddling the end of an adjacent shoe.

"Other features of the invention relate to V reinforcing the projecting integrally com nected arms by aseparate part forming a portion of the friction face'o t'the shoe, to a novel wear plateenga ing and reinforcing one end of the shoe,"to t e provision of openings for shoe-positioning means and for the anchor of an adj aoent shoe, and toother novel an'ddesirable constructions which willbe apparent from the" following description of the illustrative embodimentshown inthe accompanying drawing, in which: Q v

.Fig. 1 is a vertical section through the brake, just inside. the head of the drum, showing the shoes inside elevation; hl ig. 2 is an inside elevation of oneend s cc; I H b Fig. 3 is a side elevation of the end shoe; Fig. 4 is a section through any one of the shoes, on the line 4 -4 of Fig. 1 or Fig. 3, show ng the integral connection between the flanges forming. the stifiening web;

Fig. 5 is a partial se tion on the line 5- 5 H of Fi of Fig. 3, showing the wear plate mounting;

and 5).

end of shoe 14.. Anchors 20 and 22 may be connected by a reinforcing plate 28. v

The brake is applied b meanssuch as a double cam 80, against the resistance of a return spring 32,,and shoe 18 is. connected to the unanchored end of shoe 16 by a pivot 00 34 so that shoe l8 forces shoe 16 against the drum against the resistance. of an auxiliary spring 36. ,Thefree ends of shoes 14 and 18 carry novel cam-engaging wearljplates 38, and are positioned laterally by a plate 40 engaging the edgesof' the wear plates and carried by posts 42 secured tobacking plate 12 and projecting through openings 44 in shoes 14Tan'd 18, p s

The general'organization of this brake is 70 fully described and claimed in-prior applications, the present application relating to the construction of the shoes. Part Of the, subject-matter herein claimed is to; be regarded as continued from myprior application N 0. 754,711, filed December 8, 1924,.issued on March 22, v 19 27, as Patent N 0.)1,622,133.

Each of the-shoes is pressed or otherwise formed 'from sheet metal, in h a manner providing oppositely-extending cylindrical flangles 52 forming most of th'e' friction 'face oft e shoe, and which are preferably integral with integrally-connected portions or Webs 54 which jointly form a double-thickness stiffening web for the shoe, and which are arranged between the edgesof the shoe. Portions 54 engage each otherback to back, and inay be riveted or spot-weldedor otherwise securedto'gether. Liningfiof any desired character is secured to the rric'tion face flanges 52, forexample by riveting. 1

; At the upper end of each of the shoes 14 and 18, the ends of the stiffening-web por tions 54 are straddled by spaced portions 58 of the wear plate38, shown secured tothe stiffening web byrivets 60in such a manner asto transmit brake applying thrust to both portions of the well. O penings 44 extend partway into portions 58, forming notches in the edges of those por ion (Figs. o

At the ther end ofi each ofthe shoes 14 and 18 ,portions5 4 are severed from l each other at their inner. edges, and spread apart, to: form the arms, 26, straddling, the corre sponding end o fshoe 16. These arms, as will be apparentfrom Fig. 1, are curved sharply inward, or. otherwise offset within the curve of the friction face, so that they do not interfere with the. friction face of shoe 16.

Preferably the friction faces ofshoes 14 and 18 are extended by parts such as plates 64 bridgin arms 26. Flanges 52, where they exten onto arms 26, are depressed so that plates 64 form parts of the friction faces. of the shoe. Thus each of the shoes 14 or 18 is T-shaped in cross section throughout most of its length, but is of a channel section where arms 26 are bridged by plate 24, while arms 26 project a substantial distance beyond the friction face. Preferably tubular sleeves, or integral bushings, 66 are drawn on arms 26 to encircle anchor or pivot 34.

Shoe 16, on the other hand, is preferably of T section throughout its length. At its right end, Fig. 1, double-thickness web 54 is offset within the curve of thefriction face to clear plate 64 of shoe 14, and pivoted on anchor 22. At.its left end, Fig. 1, portions 54 of shoe 16, which are elsewhere inte- 'grallyconnec'ted along their'inner edges as in Fig. 4, are severed and reduced in width (measuring inwardly from the friction face), to form a tapering part overhanging pivot 34 and the end of shoe 18. Arms 26 of shoe 18 are offset within the curve of the friction face toclear this overhanging part ofshoe 16. I

While particular shoes have been described in detail, it is not my intention to limit the "scope of 'the' invention to those particular ihoes, or otherwise than by the terms of the appended claims.

I claim:

1. A brake shoe of sheet metal having between its edges a double-thickness stiffening web including two*single thickness portionsintegrally connected at the edge opposite the frictfonface of the shoe.

2. A brake shoe of sheet metal having a cylindrical outer friction face and having between its edges a stiffening web extending inwardly and includin two portions integrally connected at their inner e 3. A brake shoe of sheet metal aving between its edges two integrally-connected stiffening web portions spread apart at one end of the shoe. to form spaced arms.

4. A brake shoe of sheet metal having a cylindrical outer friction face and havlng between its, edges a stiffening web extending inwardly and including two portions integrally connected at their inner edges, said portions being severed and spread apart at one end of the shoe to form spaced arms.

5. A brake shoe of sheet metal generally T-shaped in cross-section, with the friction face of the shoe consisting, of op sitely-directed flanges each integral with a radial portion, and with the said portions integrally connected and, jointly forming a stiffening web.

- combination with a separate wear 6. A brake shoe of sheet metal generally T-shaped in cross-section, with the friction face of the shoe consisting of op ositely-directed flanges each integral wit a radial portion, and with the said portions integrally connected and jointly forming a stiffening web, and with the said portions severed and spread apart some distance from one end of the shoe.

' 7. A brake shoe of sheet metal including a pair of integrally-connected portions "spaced apart and forming arms at least at one end of the shoe, in combinationv with a separate part bridging across the arms and farming a part of the friction face of the s cc.

8; A brake shoe of sheet metal including a pair of integrally-connected portions spaced apart and forming arms at least.at one end of the shoe and having oppositely-projecting cylindrical flanges, in combination with a separate plate bridging across the arms and secured to and overlapping the cylindrical flanges and forming a part of the friction face of the shoe.

9. A brake shoe of sheet metal having between its edges a stiffening web including two portions integrally connected along the edge opposite the friction face of the shoe,

the portions being severed fromeach-other some distance from-one end of the shoe and spread apart to form spaced arms, in combination with a separatepart bridging across and reinforcing said arms and forming a part of the friction face of the shoe.

10. A brake shoe of sheet metal having between its edges a stiffening web including two integrally-connected portions spread apart from each other some distance from one end of the shoe to form spaced arms, in combination with a separate part bridging across and reinforcing said arms and forming a part of the friction face of the shoe.

11. A brake shoe of sheet metal having a stiffening web including two portions engaging each other back to back, in combination with a separate wear plate at one end of the shoe having a pair of backwardl projecting spaced portions straddling t e end ofthe stiffening web and transmitting brake-applying thrust to both of said portions.

12. A brake shoe of sheet metal having betweenits edges a stiffening web including two portions integrall -connected along their edges opposite the friction face of the shoe and engaging each other back to brick, in ate at one end of the shoe engaging the en of the stifienin web and transmitting brake-applying t rust to both of said ortions.

13. A curved brake shoe of pressed metal having a pair of integrally-connected spaced arms rojecting a substantial distance beyond t e friction face at one end of the shoe,

and offset within the curve of said friction face, to overlap the end of an adjacent shoe.

14. A curved brake shoe of pressed metal having a pair of integrally-connected spaced arms pro ecting a substantial distance beyond the friction face at one end of the shoe, and offset within the curve of said friction face, to overlap the end of an adjacent shoe, the arms being formed with opposite relatively large openings to afford clearance for the anchor of said adjacent shoe.

15. A brake shoe of pressed metal having two stiffening web portions integrally conrfiected along the edge opposite the friction ace.

16. A brake shoe of pressed metal having two integrally-connected stiffening web portions, and having a pair of spaced arms at one end of the shoe.

17. A brake shoe of pressed metal having two integrally-connected stiffening web portions, and having a pair of spaced arms at one end of the shoe and havin an opening through the stiffening web portions near the other end of the shoe;

18. A brake shoe of pressed'metal having two integrally-connected stiifening web portions, in combination with a wear plate engaging said portions at one' end of the shoe, said (portions having a relatively large opening a j acent the wear plate.

19. A brake shoe having a stifiening web between its edges, in combination with a wear plate having spaced portions straddling one end-of the web, and formed with an opening through the web extending at least in part through said portions of the wear plate.

20. A brake shoe of res sed metal having between its edges a sti ening web including" two portions integrally connected along their edges opposite the friction face of the shoe and secured to each other back to back, the

stiflening web portions being severed and reduced in width measured inwardly from the friction "face, near one end of the shoe, to form a tapered portion overhanging an adjacent shoe.

21. A brake shoe of pressed metal having" between its edgesa stiffening web including two portions integrally connected along their edges opposite the friction face of the shoe and secured to each other back to back, the stiifening web portions being severed and reduced in width measured inwardly from the friction face, near one end of the shoe, to form a tapered portion overhanging an adjacent shoe, the stiffening web pro ecting beyond the friction face at the other end of the shoe and olfset within the curve of the friction face, to form an anchoring arm.

22. A brake shoe the main body portion of which is formed from a single sheet of metal to present a single thickness brake lining attlaching surface and a double thickness we 23. A brake shoe the main portion of which is formed from a single sheet of metal to present a single thickness brake lining attaching surface and a double thickness web, said web bein formed by bending said metal back on itself 24. A brake shoe the main body portion of which is formed from a single sheet of metal into a T-shaped section formed by bending such sheet to simulate two L-shaped portions secured back-to-baok at their inner ends.

pendicularly thereto. n

In testimony whereof, I have hereunto signed myname.

ADIEL Y. DODGE.

disposed per-1 

